The United States has stumbled into a potential military confrontation with Russia over Ukraine - a dangerous predicament that could become a Cuban Missile Crisis in reverse.
The "Black Death" moved across Eurasia, driven by climate events that were and still are frequently occurring.
Gregg Levine is a contributor to Truthout and the former managing editor of Firedoglake. For more of his work, please visit his site, capitoilette. Follow Gregg on Twitter: @GreggJLevine.